Why giving paper business card when we can just use our mobile phone to scan a Tag and collect the contact details. Good for the planet (no more paper) and good for your time.
as our mobile phone now are synchronise with Exchange, Mesh .... you can then reuse the information where you want.
on a consummer side, we should put our details in a Tag too (mobile phone, facebook details ...) so we share the tag and not any kind of sticky note.
on a business perspective, why not adding a Tag on product package so you can see all the details on your mobile phone (and save content ....), think about any business (restaurant direction, bus schedule ...)
please have a look to Microsoft Tag : http://www.microsoft.com/tag/
My Tag :